CN109872676A - A kind of digital drive pixel circuit and display device - Google Patents
A kind of digital drive pixel circuit and display device Download PDFInfo
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- CN109872676A CN109872676A CN201910324209.6A CN201910324209A CN109872676A CN 109872676 A CN109872676 A CN 109872676A CN 201910324209 A CN201910324209 A CN 201910324209A CN 109872676 A CN109872676 A CN 109872676A
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Abstract
It includes data voltage writing module, memory module, driving voltage writing module, drive module and light emitting module that the embodiment of the present invention, which discloses a kind of digital drive pixel circuit and display device, digital drive pixel circuit,；Driving voltage writing module includes control terminal, first end and second end, the control terminal of driving voltage writing module is electrically connected with data voltage writing module, the first end of driving voltage writing module is electrically connected with the first voltage signal input part of digital drive pixel circuit, and the second end of driving voltage writing module is electrically connected with the control terminal of drive module；Voltage of the memory module for the control terminal of storage driving voltage writing module；Driving voltage writing module is used for voltage turn-on or the shutdown of the control terminal according to driving voltage writing module, and the voltage that first voltage input terminal inputs is written to the control terminal of drive module in conducting；The current potential of drive module control terminal is allowed to keep stable, so that the picture brightness that display device is shown is uniform.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of digital drive pixel circuit and display devices.
Background technique
Display technology development in recent years is swift and violent, for the hot issue for being driven into research and development of display device.
It in the prior art, include analog-driven and digital drive to the driving of display device.Compared to analog-driven, number
Driving have it is low in energy consumption, signal is not easily susceptible to interfere, it is high to driving element consistency tolerance the advantages that.But with display device
Pixel density it is higher and higher, Pixel Dimensions are smaller and smaller, in digital drive pixel circuit there are storage capacitance it is too small caused by
It is low to signal conservation rate, the problem of influencing display effect.
Summary of the invention
The present invention provides a kind of digital drive pixel circuit and display device, to realize the good of driving voltage in pixel circuit
It is good to keep, so that the driving current of driving light emitting module keeps stablizing, and then improves display device and show picture brightness
Uniformity improves display effect.
In a first aspect, the embodiment of the invention provides a kind of digital drive pixel circuit, including data voltage writing module,
Memory module, driving voltage writing module, drive module and light emitting module；
Driving voltage writing module includes control terminal, first end and second end, the control terminal of driving voltage writing module with
The electrical connection of data voltage writing module, the first end of driving voltage writing module and the first voltage of digital drive pixel circuit are believed
The electrical connection of number input terminal, the second end of driving voltage writing module are electrically connected with the control terminal of drive module；
Data voltage writing module is used to that data voltage to be written to the control terminal of driving voltage writing module；
Voltage of the memory module for the control terminal of storage driving voltage writing module；
Driving voltage writing module is used for voltage turn-on or shutdown according to the control terminal of driving voltage writing module, and
The voltage that first voltage input terminal inputs is written to the control terminal of drive module when conducting；
Drive module is used to drive light emitting module to shine according to the voltage of drive module control terminal；So that drive module controls
The current potential at end can keep stable, so that the picture brightness that display device is shown is uniform, improve display effect.
Wherein, the control terminal of data voltage writing module and the scanning signal input terminal of digital drive pixel circuit are electrically connected
It connects, the first end of data voltage writing module is electrically connected with the data voltage input terminal of digital drive pixel circuit, data voltage
The first end of writing module is electrically connected with the control terminal of the driving voltage writing module of digital drive pixel circuit；
The first end of memory module is electrically connected with the control terminal of the driving voltage writing module of pixel circuit, memory module
Second end is electrically connected with the first end of the driving voltage writing module of pixel circuit；
The control terminal of drive module is electrically connected with the second end of driving voltage writing module, the first end and picture of drive module
The second voltage signal input part of plain circuit is electrically connected, and the second end of drive module is electrically connected with the first end of light emitting module；
The second end of light emitting module is electrically connected with the tertiary voltage signal input part of pixel circuit.
Wherein, data voltage writing module includes the first transistor, and driving voltage writing module includes second transistor, is driven
Dynamic model block includes third transistor, and memory module includes first capacitor, and light emitting module includes organic luminescent device；
Control terminal of the grid of the first transistor as data voltage writing module, the first pole of the first transistor is as number
According to the first end of voltage writing module, second end of the second pole of the first transistor as data voltage writing module；
Control terminal of the grid of second transistor as driving voltage writing module, the first pole of second transistor is as drive
The first end of dynamic voltage writing module, second end of the second pole of second transistor as driving voltage writing module；
Control terminal of the grid of third transistor as drive module, the first pole of third transistor is as drive module
First end, second end of the second pole of third transistor as drive module；
First end and second end of two pole plates of first capacitor respectively as memory module；
First end of first pole of organic luminescent device as light emitting module, the second pole of organic luminescent device is as luminous
The second end of module.
It wherein, further include the shutdown module that accidentally shines, the first end for the shutdown module that accidentally shines and the first end electricity of light emitting module
The second end of connection, the shutdown module that accidentally shines is electrically connected with the second end of light emitting module, and the control terminal for the shutdown module that accidentally shines is used
In input control signal, so that the shutdown module that accidentally shines is connected when driving voltage writing module turns off；And then it may be implemented pair
The reliable control of light emitting module guarantees that, when drive module turns off, light emitting module will not be deposited because of leakage current in pixel circuit
And shine so that the corresponding luminous duration of each display grayscale can be accurately controlled, guarantee good display effect.
Wherein, the shutdown module that accidentally shines includes the 4th transistor, and the grid of the 4th transistor is as the shutdown module that accidentally shines
Control terminal, the first end of the first pole of the 4th transistor as the shutdown module that accidentally shines, the second pole conduct of the 4th transistor
The second end for the shutdown module that accidentally shines.
Wherein, the channel type of second transistor and the 4th transistor is different；The grid and the second crystal of 4th transistor
The grid of pipe is electrically connected；And then the grid of the 4th transistor can be made without connecting individual control line, for including the number
For the display device of word drive pixel circuit, number of wires not will increase, be advantageously implemented higher pixel density.
Wherein, the channel type of second transistor and the 4th transistor is identical, the grid and digital drive of the 4th transistor
First control signal of pixel circuit is electrically connected；And then it can to prepare the thin film transistor (TFT) in digital drive pixel circuit
When, preparation process more simplifies.
Wherein, digital drive pixel circuit further includes light emitting control module, and light emitting control module includes control terminal, first end
And second end, the control terminal of light emitting control module are electrically connected with the LED control signal input terminal of pixel circuit, light emitting control mould
The first end of block is electrically connected with the second voltage signal input part of pixel circuit, the second end and drive module of light emitting control module
First end electrical connection, and then may be implemented to the significantly more efficient control of light emitting module.
Second aspect, the embodiment of the invention also provides a kind of display device, the digital drive provided including first aspect
Pixel circuit further includes scan drive circuit, data drive circuit, driving chip, multi-strip scanning line, multiple data lines and more
First voltage signal wire, data drive circuit are integrated in driving chip；Digital drive pixel circuit includes that data voltage is defeated
Enter end, scanning signal input terminal and first voltage signal input part；
The port of scan drive circuit is electrically connected with scan line, and the port of data drive circuit is electrically connected with data line, number
The scanning signal input terminal of word drive pixel circuit is electrically connected a scan line, the data voltage input of digital drive pixel circuit
One data line of end electrical connection, driving chip pass through the first voltage signal of first voltage signal wire and digital drive pixel circuit
Input terminal electrical connection.
Wherein, driving chip includes a first voltage signal output end；One end of a plurality of first voltage signal wire connects
The first voltage signal input part of first voltage signal output end, digital drive pixel circuit is electrically connected a first voltage signal
Line；A plurality of first voltage signal wire is interconnected to latticed；Data are provided by individual data line compared to the prior art
Voltage reduces RC retardation ratio so that the light emission luminance of light emitting module for being located at display picture different location is more nearly, more added with
Conducive to the homogeneity control to light emitting module light emission luminance.
The present invention provides digital drive pixel circuit and display devices, are write by the way that driving voltage is arranged in pixel circuit
Enter control module, wherein the control terminal of driving voltage write-in control module is electrically connected with data voltage writing module, driving voltage
The first end of writing module is electrically connected with the first voltage signal input part of digital drive pixel circuit, data voltage writing module
Second end be electrically connected with the control terminal of drive module；Driving voltage writing module is according to the control terminal of driving voltage writing module
Voltage turn-on or shutdown, and the voltage that first voltage input terminal inputs is written to in conducting the control terminal of drive module,
Allow the current potential of drive module control terminal to keep stable, so that the picture brightness that display device is shown is uniform, improves
Display effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of working sequence in a subframe of digital drive pixel circuit provided in an embodiment of the present invention
Figure；
Fig. 4 is another working sequence of the digital drive pixel circuit provided in an embodiment of the present invention in a subframe
Figure；
Fig. 5 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 7 is another working sequence of the digital drive pixel circuit provided in an embodiment of the present invention in a subframe
Figure；
Fig. 8 is another working sequence of the digital drive pixel circuit provided in an embodiment of the present invention in a subframe
Figure；
Fig. 9 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Figure 11 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Figure 12 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
As described in the background art, in the prior art, it causes there are storage capacitance is too small in digital drive pixel circuit
, influence display effect the problem of low to signal conservation rate.Through inventor the study found that the reasons for the above problems are,
Storage capacitance and driving transistor are generally included in existing digital drive pixel circuit, the both ends of storage capacitance are brilliant with driving respectively
The grid and source electrode of body pipe are electrically connected, and wherein source electrode commonly enters fixed voltage.With display device pixel density increasingly
Height, Pixel Dimensions are smaller and smaller, and the area of corresponding storage capacitance is also smaller and smaller, cause for data voltage to be written to driving crystalline substance
After the grid of body pipe, storage capacitance is poor to the holding capacity of drive transistor gate voltage, so that driving transistor gate electricity
Pressure is not able to maintain stabilization, so that the driving current of luminescent device is not able to maintain stabilization, when display device being caused to show picture
Uniformity is poor, and display effect is poor.
For these reasons, the embodiment of the present invention provides a kind of digital drive pixel circuit, and Fig. 1 is that the embodiment of the present invention mentions
A kind of structural schematic diagram of the digital drive pixel circuit supplied, with reference to Fig. 1, which includes that data voltage is write
Enter module 110, memory module 120, driving voltage writing module 130, drive module 140 and light emitting module 150；
Driving voltage writing module 130 includes control terminal G2, first end and second end, driving voltage writing module 130
Control terminal G2 is electrically connected with data voltage writing module 110, the first end and digital drive pixel of driving voltage writing module 130
The first voltage signal input part Vctr of circuit is electrically connected, second end and the drive module 140 of driving voltage writing module 130
Control terminal G3 electrical connection；
Data voltage writing module 110 is used to that data voltage to be written to the control terminal G2 of driving voltage writing module 130；
Voltage of the memory module 120 for the control terminal G2 of storage driving voltage writing module 130；
Driving voltage writing module 130 be used for according to the voltage turn-on of the control terminal G2 of driving voltage writing module 130 or
It turns off, and the voltage of first voltage signal input part Vctr input is written to the control terminal G3 of drive module 140 in conducting；
Drive module 140 is used to drive light emitting module 150 to shine according to the voltage of 140 control terminal G3 of drive module.
Compared to the corresponding data voltage of grayscale each in analog-driven, i.e. a data voltage corresponds to light emitting module
One light emission luminance.The working condition of luminescent device only includes illuminated state and dark-state in digital drive pixel circuit, and when illuminated state
Light emission luminance is consistent.Wherein, the working sequence of digital drive pixel circuit includes digital 1 state timing and digital 0 state
Timing, wherein digital 1 state timing corresponds to the illuminated state of light emitting module, digital 0 state timing corresponds to the dark-state of light emitting module.Number
Pixel circuit is driven to pass through fluorescent lifetime length (i.e. the duration of illuminated state and dark-state) Lai Shixian grayscale control of control light emitting module 140
System.
Specifically, in digital drive pixel circuit provided in this embodiment, including driving voltage writing module 130, driving
Voltage writing module 130 includes control terminal G2, first end and second end, the control terminal G2 and number of driving voltage writing module 130
It is electrically connected according to voltage writing module 110, the first end of driving voltage writing module 130 and the first electricity of digital drive pixel circuit
Press signal input part Vctr electrical connection, the second end of data voltage writing module 110 and the control of driving voltage writing module 140
Hold G2 electrical connection.Data voltage is written to the control terminal G2 of driving voltage writing module 130 by data voltage writing module 110
Afterwards, memory module 120 carries out storage holding to the current potential of the control terminal G2 of driving voltage writing module 130.With conventional pixel electricity
Road is compared, and memory module 120 keeps the current potential of 130 control terminal G2 of driving voltage writing module in the embodiment of the present invention,
It is held on driving voltage writing module 130 or off state, the electricity without being to maintain 140 control terminal G3 of drive module
Position, therefore, even if the storage capacity of memory module 120 is poor, will not influence the current potential of 140 control terminal G3 of drive module.
Voltage turn-on or shutdown of the driving voltage writing module 130 according to its control terminal G2, such as driving voltage write-in
When the current potential of 130 control terminal G2 of module is low level (such as -5V), driving voltage writing module 130 is connected, driving voltage write-in
When the current potential of 130 control terminal G2 of module is high level (such as+5V), driving voltage writing module 130 is turned off.Driving voltage write-in
When module 130 is connected, the voltage signal of the first voltage signal input part Vctr input of digital drive pixel circuit passes through conducting
Driving voltage writing module 130 be transmitted to the control terminal G3 of drive module 140, the electricity of 140 control terminal G3 of drive module at this time
Position is equal to the voltage signal of first voltage signal input part Vctr input, which can be constant signal, i.e., in driving electricity
When writing module 130 being pressed to be connected, first voltage input terminal Vctr keeps inputting constant voltage to the control terminal G3 of drive module 140
Signal, so that the current potential of 140 control terminal G3 of drive module keeps stablizing, so that drive module 140 is according to its control terminal G3
When driving to light emitting module 150, the driving current of driving light emitting module 150 keeps stablizing, and then it is aobvious to improve display device
Show the uniformity of picture brightness, improves display effect.
Control is written by the way that driving voltage is arranged in pixel circuit in digital drive pixel circuit provided in an embodiment of the present invention
Molding block, wherein the control terminal of driving voltage write-in control module is electrically connected with data voltage writing module, driving voltage write-in
The first end of module is electrically connected with the first voltage signal input part of digital drive pixel circuit, and the of data voltage writing module
Two ends are electrically connected with the control terminal of drive module；Driving voltage writing module is according to the electricity of the control terminal of driving voltage writing module
On or off is pressed, and the voltage that first voltage signal input part inputs is written to the control terminal of drive module in conducting,
Allow the current potential of drive module control terminal to keep stable, so that the picture brightness that display device is shown is uniform, improves
Display effect.
The above are core of the invention thought, the attached drawing in conjunction with the embodiments is continued with, in the embodiment of the present invention
Technical solution is clearly and completely described, it is clear that and described embodiments are only a part of the embodiments of the present invention, without
It is whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
It puts, every other embodiment obtained shall fall within the protection scope of the present invention.
Continue to refer to figure 1, on the basis of above scheme, optionally, the control terminal G1 of data voltage writing module 110 with
The scanning signal input terminal Scan of digital drive pixel circuit is electrically connected, the first end and number of data voltage writing module 110
Drive the data voltage input terminal Data electrical connection of pixel circuit, the first end and digital drive of data voltage writing module 110
The control terminal G2 of the driving voltage writing module 130 of pixel circuit is electrically connected；
The first end of memory module 120 is electrically connected with the control terminal G2 of the driving voltage writing module 130 of pixel circuit, is deposited
The second end of storage module 120 is electrically connected with the first end of the driving voltage writing module 130 of pixel circuit；
The control terminal G3 of drive module 140 is electrically connected with the second end of driving voltage writing module 130, drive module 140
First end be electrically connected with the second voltage signal input part Vdd of pixel circuit, the second end and light emitting module of drive module 140
150 first end electrical connection；
The second end of light emitting module 150 is electrically connected with the tertiary voltage signal input part Vss of pixel circuit.
As described in above-described embodiment, the working sequence of digital pixel circuit includes digital 0 state timing and digital 1 state
Timing, and a frame picture is divided into multiple subframes in time, wherein 0 state corresponding data voltage input end Data of number is defeated
Enter the subframe state of high level, the subframe state of digital 1 state corresponding data voltage input end Data input low level；Or number
The subframe state of 0 state corresponding data voltage input end Data input low level of word, digital 1 state corresponding data voltage input end
The subframe state of Data input high level.For example, driving voltage writing module 130 is p-type film crystal for LTPS backboard
Pipe, then the subframe state of digital 0 state corresponding data voltage input end Data input high level (drives mode voltage write-in block 130
Shutdown, drive module 140 turn off, the dark-state of corresponding light emitting module 140), 1 state corresponding data voltage input end Data of number is defeated
Entering low level subframe state, (driving voltage writing module 130 is connected, and drive module 140 is connected, corresponding light emitting module 140
Illuminated state).
The subframe of subframe and digital 1 state timing for digital 0 state timing, the work of above-mentioned digital drive pixel circuit
It may include data write phase and light emitting phase as timing；In data write phase, scanning signal input terminal Scan inputs phase
Data voltage writing module 110 is connected in the control signal answered, and the data-signal of data voltage input terminal Data input is by leading
Logical data voltage writing module 110 is written to the control terminal of driving voltage writing module 130；
Memory module 120 can the current potential of control terminal G2 to driving voltage writing module 130 carry out storage holding；
In light emitting phase, driving voltage writing module 130 is according to the current potential on or off of its control terminal G2, such as works as drive
When the current potential of the control terminal G2 of dynamic voltage writing module 130 is low level, driving voltage writing module 130 is connected；When driving electricity
When the current potential of the control terminal G2 of writing module 130 being pressed to be high level, driving voltage writing module 130 is turned off.If being written in data
Low level digital signal is written to the control terminal G2 of driving voltage writing module 130 in stage, data voltage writing module 110, then
It is connected in light emitting phase driving voltage writing module 130, the first voltage signal input part Vctr of digital drive pixel circuit is defeated
The constant voltage signal entered drives mould by the control terminal G3 of the 130 write driver module 140 of driving voltage writing module of conducting
Block 140 can drive light emitting module 150 to shine according to the voltage of control terminal G3.Also, because 140 control terminal G3 of drive module passes through
The driving voltage writing module 130 of conducting directly receives the first voltage signal input part Vctr input of digital drive pixel circuit
Voltage signal, for guarantee 140 control terminal G3 of drive module current potential stablize, first voltage signal input part Vctr can access perseverance
Constant voltage, so that the current potential of 140 control terminal G3 of drive module is constant, so that drive module 140 is to light emitting module in light emitting phase
150 driving current constant, so that the light emission luminance of light emitting module 150 will not decline with the time, so that the mould that shines
The light emission luminance of block 150 is uniform, improves display effect.
If data voltage writing module 110 is written to the control terminal of driving voltage writing module 130 in data write phase
High level data signal is then turned off in light emitting phase driving voltage writing module 130, the first voltage of digital drive pixel circuit
The constant voltage signal of signal input part Vctr input is unable to the control terminal G3 of write driver module 140, and light emitting module 150 is not sent out
Light.
It should be noted that guarantee that data-signal can be completely written to the control terminal of driving voltage writing module 130
G2, (the setting duration and data voltage of the pulse of data voltage input terminal Data input data signal are written data write phase
The setting duration that module 110 is connected) it is usually longer, and because data-signal only includes high potential (such as+5V) and low potential (example
Such as -5V), therefore the usually shorter (embodiment of the present invention pair of duration needed for being written to 130 control terminal G2 of driving voltage writing module
This ignores), therefore, in data write phase, driving voltage writing module 130 is connected according to the current potential of itself control terminal G2
Or shutdown, when driving voltage writing module 130 is connected, the voltage signal of first voltage signal input part Vctr input is input to
The control terminal G3 of drive module 140, drive module 140 are connected, and light emitting module 150 can also shine in data write phase；Driving
When voltage writing module 130 turns off, the voltage signal of first voltage signal input part Vctr input cannot be input to drive module
140 control terminal G3, drive module 140 turn off, and light emitting module 150 does not shine in data write phase.
Also, digital drive pixel circuit provided in an embodiment of the present invention, can be by adjusting first voltage signal input part
The big minor adjustment of voltage value of Vctr input is written to the current potential of 140 control terminal of drive module, and then adjustable light emitting module 150
Light emission luminance.
Fig. 2 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention, with reference to Fig. 2, number
It include the first transistor T1 according to voltage writing module 110, driving voltage writing module 130 includes second transistor T2, drives mould
Block 140 includes third transistor T3, and memory module 120 includes first capacitor C1, and light emitting module 150 includes organic luminescent device
D1；
The of the grid of the first transistor T1 the control terminal G1 as data voltage writing module 110, the first transistor T1
First end of one pole as data voltage writing module 110, the second pole of the first transistor T1 is as data voltage writing module
110 second end；
Control terminal of the grid of second transistor T2 as driving voltage writing module 130, the first of second transistor T2
First end of the pole as driving voltage writing module 130, the second pole of second transistor T2 is as driving voltage writing module 130
Second end；
Control terminal of the grid of third transistor T3 as drive module 140, the first pole of third transistor T3 is as drive
The first end of dynamic model block 140, second end of the second pole of third transistor T3 as drive module 140；
First end and second end of two pole plates of first capacitor C1 respectively as memory module 120；
First end of the first pole of organic luminescent device D1 as light emitting module 150, the second pole of organic luminescent device D1
Second end as light emitting module 150.
In digital drive pixel circuit, common scan method includes subfield scanning method, i.e., in time by a frame picture
It is divided into multiple subframes, by controlling the data-signal being written in each subframe to 130 control terminal G2 of driving voltage writing module,
And then control whether first voltage signal input part Vctr to the control terminal of drive module 140 be written electricity in each subframe
The luminous duration of the time of signal and each subframe control organic luminescent device D1 is pressed, and then controls organic luminescent device D1's
Show grayscale.Such as the display for 16 grayscale, a frame picture can be divided into time to 4 subframes, each subframe when
Between the ratio between be 1:2:4:8.As described above, in each subframe, the data being written to second transistor T2 grid can be with high potential
Data-signal or low potential data-signal control bright dark state of the organic luminescent device D1 in the subframe, and then control organic
The luminous duration of luminescent device D1.Fig. 3 is digital drive pixel circuit provided in an embodiment of the present invention in a subframe
A kind of working timing figure；Fig. 4 is another work of the digital drive pixel circuit provided in an embodiment of the present invention in a subframe
Make timing diagram.The working sequence of digital drive pixel circuit shown in Fig. 3 and Fig. 4 can correspond to pixel circuit shown in Fig. 2.
It is carried out so that the first transistor T1, second transistor T2, third transistor T3 are P-type transistor as an example below exemplary
Explanation.Corresponding digital 1 state (illuminated state of organic luminescent device) of the working sequence of digital drive pixel circuit shown in Fig. 3, at this
In subframe, data voltage input terminal Data inputs low potential data-signal (such as -5V)；Digital drive pixel circuit shown in Fig. 4
Corresponding digital 0 state (dark-state of organic luminescent device) of working sequence, in the subframe, data voltage input terminal Data input
High potential data-signal (such as+5V).
Referring to figs. 2 and 3, in the corresponding subframe of timing diagram shown in Fig. 3, in data write phase t1, scanning signal is defeated
Enter to hold grid input low level signal of the Scan to the first transistor T1, the first transistor T1 conducting, data voltage input terminal
The low potential data-signal of Data input is written to the grid of second transistor T2 by the first transistor T1 be connected；
First capacitor C1 can store the low potential data-signal of second transistor T2 grid；
It is connected in light emitting phase t2, second transistor T2 according to its grid low potential data-signal, first voltage signal is defeated
The voltage signal for entering to hold Vctr to input is written to the grid of third transistor T3 by the second transistor T2 be connected.First voltage
The voltage signal of signal input part Vctr input can be a constant low voltage signal (such as -5V).Therefore, third crystal
Pipe T3 is connected according to the current potential of the input of its grid, and third transistor T3 (specifically can be with according to the current potential of its grid and the first pole
The source electrode of third transistor T3) current potential driving organic luminescent device D1 shine.Because of the source electrode connection number of third transistor T3
The second voltage signal input part Vdd of word drive pixel circuit is electrically connected, and current potential is fixed；The grid potential of third transistor T3
For the voltage of first voltage signal input part Vctr input, current potential is also fixed, according to driving current calculation formulaVGS is to drive the gate source voltage of transistor poor,
VG is the grid voltage for driving transistor, and VS is the source voltage for driving transistor, and Vth is the threshold voltage for driving transistor,
Therefore driving current is fixed, and in the light emission luminance uniformity of light emitting phase organic luminescent device D1, guarantees that display effect is good.
With reference to Fig. 2 and Fig. 4, in the corresponding subframe of timing diagram shown in Fig. 4, in data write phase t1, scanning signal is defeated
Enter to hold grid input low level signal of the Scan to the first transistor T1, the first transistor T1 conducting, data voltage input terminal
The high potential data-signal of Data input is written to the grid of second transistor T2 by the first transistor T1 be connected；
First capacitor C1 can store the high potential data-signal of second transistor T2 grid；
Ended in light emitting phase t2, second transistor T2 according to the high potential data-signal of its grid, first voltage signal
The voltage signal of input terminal Vctr input cannot write the grid of third transistor T3.Therefore, third transistor T3 is according to its grid
The current potential of the input of pole ends, and organic luminescent device D1 does not shine in the subframe.
By time of the subframe of corresponding digital 0 state of control and the subframe time of 1 state of corresponding number, may be implemented
The display of different grayscale.For example, the display for 16 grayscale, is divided into 4 subframes for a frame picture in time, respectively
The ratio between the time of one subframe, the second subframe, third subframe, the 4th subframe, each subframe is followed successively by 1:2:4:8.Such as to realize 7
When grayscale is shown, the corresponding digital 1 state timing of the first subframe of data voltage input terminal, the second subframe, third subframe, so that third
Transistor T3 is connected in the first subframe, the second subframe, third subframe, makes organic luminescent device D1 in the first subframe, the second son
Frame and third subframe shine；0 state timing of corresponding number in the 4th subframe of data voltage input terminal, so that third transistor T3 exists
The light emitting phase of 4th subframe turns off, and organic luminescent device D1 is made not shine in the light emitting phase of the 4th subframe, and 7 ashes can be realized
Rank shows.For other grayscale, identical as 7 grayscale displaying principles, details are not described herein.
Fig. 5 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention.With reference to Fig. 5,
On the basis of above scheme, digital drive pixel circuit further includes the shutdown module 160 that accidentally shines, and accidentally shine shutdown module 160
First end is electrically connected with the first end of light emitting module 150, and the of the second end of the shutdown module 160 that accidentally shines and light emitting module 150
The control terminal G4 of the electrical connection of two ends, the shutdown module 160 that accidentally shines is used for input control signal, so that the shutdown module 160 that accidentally shines
It is connected when driving voltage writing module 130 turns off.
Specifically, when being turned off because of driving voltage writing module 130, the voltage letter of first voltage signal input part Vctr input
It number cannot be written to the control terminal of drive module 140, so that drive module 140 turns off, light emitting module 150 is not driven
It is dynamic.The shutdown module 160 that accidentally shines when driving voltage writing module 130 turns off is connected, so that the first end of light emitting module 150 and the
The current potential at two ends is equal, so that light emitting module 150 is fully closed without shining, and then may be implemented to light emitting module 150
Reliable control guarantees when drive module 140 turns off, light emitting module 150 will not because of leakage current in pixel circuit presence and
It shines, so that the corresponding luminous duration of each display grayscale can be accurately controlled, guarantees good display effect.
Fig. 6 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention.With reference to Fig. 6,
On the basis of above scheme, on the basis of above scheme, the shutdown module 160 that accidentally shines includes the 4th transistor T4, and the 4th is brilliant
The grid of body pipe T4 is closed as the first pole of the control terminal G4, the 4th transistor T4 of the shutdown module 160 that accidentally shines as accidentally shining
The first end of disconnected module 160, second end of the second pole of the 4th transistor T4 as the shutdown module 160 that accidentally shines.
The working sequence of digital drive pixel circuit shown in Fig. 6 still may include data access stage and light emitting phase.Fig. 7 is
Another working timing figure of the digital drive pixel circuit provided in an embodiment of the present invention in a subframe；Fig. 8 is the present invention
Another working timing figure of the digital drive pixel circuit that embodiment provides in a subframe.Number shown in Fig. 7 and Fig. 8 is driven
The working sequence of dynamic pixel circuit can correspond to pixel circuit shown in fig. 6.Below with the first transistor T1, second transistor T2,
Third transistor T3 be P-type transistor for, the 4th transistor T4 be N-type transistor for illustrate.Shown in Fig. 7
Corresponding digital 1 state (illuminated state of organic luminescent device) of the working sequence of digital drive pixel circuit, in the subframe, data electricity
Press input terminal Data input low level；Corresponding digital 0 state (the organic hair of the working sequence of digital drive pixel circuit shown in Fig. 8
The dark-state of optical device), in the subframe, data voltage input terminal Data input high level.
With reference to Fig. 6 and Fig. 7, in the corresponding subframe of timing diagram shown in Fig. 7, in data write phase t1, scanning signal is defeated
Enter to hold grid input low level signal of the Scan to the first transistor T1, the first transistor T1 conducting, data voltage input terminal
The low potential data-signal of Data input is written to the grid of second transistor T2 by the first transistor T1 be connected；
First capacitor C1 can store second transistor T2 grid low potential data-signal；
It is connected in light emitting phase t2, second transistor T2 according to its grid low potential data-signal, first voltage signal is defeated
The voltage signal for entering to hold Vctr to input is written to the grid of third transistor T3 by the second transistor T2 be connected；4th crystal
The grid input low level signal of pipe T4, the 4th transistor T4 cut-off.Third transistor T3 is according to the current potential of the input of its grid
Conducting, third transistor T3 shine according to the current potential of its grid and the current potential driving organic luminescent device D1 of source electrode.
With reference to Fig. 6 and Fig. 7, it should be noted that guarantee that data-signal can be completely written to second transistor T2's
Grid, data write phase (the pulse settings duration and the first transistor T1 of data voltage input terminal Data input data signal
The duration of conducting) it is usually longer, and because data-signal only includes high potential (such as+5V) and low potential (such as -5V), therefore write
Enter (embodiment of the present invention ignores to this) usually shorter to duration needed for second transistor T2 grid, therefore, in data
Write phase t1, the current potential of second transistor T2 grid are the low potential data-signal of write-in, and second transistor T2 is connected, first
The voltage signal of voltage signal inputs Vctr input cannot write the grid of third transistor T3, and third transistor T3 is connected,
The grid input low level of 4th transistor T4 makes organic luminescent device D1 shine so that third transistor T4 is turned off.
With reference to Fig. 6 and Fig. 8, in the corresponding subframe of timing diagram shown in Fig. 8, in data write phase t1, scanning signal is defeated
Enter to hold grid input low level signal of the Scan to the first transistor T1, the first transistor T1 conducting, data voltage input terminal
The high potential data-signal of Data input is written to the grid of second transistor T2 by the first transistor T1 be connected；In data
Write phase t1, second transistor T2 are in off state；The grid input high level signal of 4th transistor T4, the 4th crystal
Pipe T4 conducting, therefore organic luminescent device D1 anode potential is identical as cathode potential, organic luminescent device D1 be completely switched off and
It does not shine；
First capacitor C1 can store second transistor T2 grid low potential data-signal；
Ended in light emitting phase t2, second transistor T2 according to its grid low potential data-signal, first voltage signal is defeated
The voltage signal for entering to hold Vctr to input cannot write the grid of third transistor T3.Therefore, third transistor T3 is according to its grid
Input current potential cut-off；The grid input high level signal of 4th transistor T4, the 4th transistor T4 conducting, therefore organic hair
Optical device D1 anode potential is identical as cathode potential, and organic luminescent device D1 is completely switched off without shining.
With reference to Fig. 6 and Fig. 8, it should be noted that guarantee that data-signal can be completely written to second transistor T2's
Grid, (pulse duration and the first transistor T1 of data voltage input terminal Data input data signal are connected data write phase
Duration) it is usually longer, and because data-signal only includes high potential (such as+5V) and low potential (such as -5V), therefore be written to
Duration needed for second transistor T2 grid is usually shorter (embodiment of the present invention ignores to this), therefore, is written in data
Stage t1, the current potential of second transistor T2 grid are the high potential data-signal of write-in, second transistor T2 shutdown, first voltage
The voltage signal of signal input part Vctr input cannot write the grid of third transistor T3, and third transistor T3 is turned off, and the 4th
The grid input high level of transistor T4 is completely switched off organic luminescent device D1, prevents so that the 4th transistor T4 is connected
Organic luminescent device D1 accidentally shines.
Pixel circuit provided in this embodiment, by controlling the 4th transistor T4 conducting when second transistor T2 ends,
The voltage signal of first voltage signal input part Vctr input cannot be written to third transistor when because of second transistor T2 cut-off
The grid of T3, so that third transistor T3 is also switched off when second transistor T2 ends, the 4th transistor T4 conducting, organic illuminator
Part D1 anode is equal with the current potential of cathode, so that organic luminescent device D1 is fully closed when second transistor T2 ends,
And then reliable control to light emitting module 150 may be implemented, guarantee when drive module 140 turns off, light emitting module 150 will not be because
For leakage current in pixel circuit presence and shine so that the corresponding luminous duration of each display grayscale can be controlled accurately
System, guarantees good display effect.
Fig. 9 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention, with reference to Fig. 9,
On the basis of above scheme, optionally, the channel type of second transistor T2 and the 4th transistor T4 are different；4th transistor T4
Grid be electrically connected with the grid of second transistor T2.
In the embodiment of the present invention, the shutdown module 160 that accidentally shines is connected when driving voltage writing module 130 turns off, i.e., and the
Four transistor T4 are connected when second transistor T2 is turned off.4th transistor T4 and second transistor T2 is different using channel type
Transistor, the grid electrical connection of the grid of the 4th transistor T4 and second transistor T2 can make the 4th transistor T4's
When the grid of grid and second transistor T2 input identical control signal, the conducting of second transistor T2 and the 4th transistor T4
Off state on the contrary, can guarantee the 4th transistor T4 conducting when second transistor T2 is turned off in turn；So that in the second crystal
When pipe T2 is turned off while turning off (third transistor T3), two terminal potentials of organic luminescent device D1 be it is identical so that photophore
Part is fully closed, and will not be shone because of leakage current in pixel circuit, so can accurately control luminescent device it is luminous when
It is long, so that the corresponding luminous duration of each display grayscale can be accurately controlled, guarantee good display effect.Also,
The grid of 4th transistor T4 and second transistor T2 is electrically connected, and the grid of the 4th transistor T4 can be made independent without connection
Control line not will increase number of wires for the display device comprising the digital drive pixel circuit, be advantageously implemented
Higher pixel density.
The working sequence of digital drive pixel circuit shown in Fig. 3 and Fig. 4 can also correspond to pixel circuit shown in Fig. 9.Below
Still using the first transistor T1, second transistor T2, third transistor T3 as P-type transistor, the 4th transistor T4 is N-type transistor
For illustrate.With reference to Fig. 9 and Fig. 3, in the corresponding subframe of Fig. 3, in data write phase t1, scanning signal is defeated
Enter to hold grid input low level signal of the Scan to the first transistor T1, the first transistor T1 conducting, data voltage input terminal
The low potential data-signal of Data input is written to the grid of second transistor T2 by the first transistor T1 be connected；In data
Write phase t1, second transistor T2 are in off state；
First capacitor C1 can store second transistor T2 grid low potential data-signal；
It is connected in light emitting phase t2, second transistor T2 according to its grid low potential data-signal, first voltage signal is defeated
The voltage signal for entering to hold Vctr to input is written to the grid of third transistor T3 by the second transistor T2 be connected；4th crystal
Pipe T4 ends according to its grid low potential.Third transistor T3 is connected according to the current potential of the input of its grid, third transistor T3
Organic luminescent device D1 is driven to shine according to the current potential of the current potential of its grid and source electrode.
With reference to Fig. 9 and Fig. 4, in the corresponding subframe of timing diagram shown in Fig. 4, in data write phase t1, scanning signal is defeated
Enter to hold grid input low level signal of the Scan to the first transistor T1, the first transistor T1 conducting, data voltage input terminal
The high potential data-signal of Data input is written to the grid of second transistor T2 by the first transistor T1 be connected；In data
Write phase t1, second transistor T2 are in off state；
First capacitor C1 can store second transistor T2 grid high potential data-signal；
Ended in light emitting phase t2, second transistor T2 according to its grid high potential data-signal, first voltage signal is defeated
The voltage signal for entering to hold Vctr to input cannot write the grid of third transistor T3.Therefore, third transistor T3 is according to its grid
Input current potential cut-off；4th transistor T4 is connected according to its grid high potential data-signal, therefore organic luminescent device D1
Anode potential is identical as cathode potential, and organic luminescent device D1 is completely switched off without shining.
Figure 10 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention, with reference to Figure 10,
On the basis of above scheme, optionally, the channel type of second transistor T2 and the 4th transistor T4 are identical, the 4th transistor
The grid of T4 is electrically connected with the first control signal EN of digital drive pixel circuit.
The channel type of second transistor T2 and the 4th transistor T4 are identical, can to prepare digital drive pixel circuit
In thin film transistor (TFT) when, preparation process more simplify.Optionally, the first transistor T1, second transistor T2, third transistor
The channel type of T3 and the 4th transistor T4 are all identical, and then are further simplified preparation process.
It should be noted that in the timing of provided the first control signal of the pixel circuit EN of Figure 10 and Fig. 6 pixel circuit
The signal of first control signal EN is on the contrary, the timing of other signals is consistent with Fig. 7 and Fig. 8, and details are not described herein.
Figure 11 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention, with reference to Figure 11,
Optionally, digital drive pixel circuit further includes light emitting control module 170, and light emitting control module 170 includes control terminal, first end
And second end, the control terminal G5 of light emitting control module 170 are electrically connected with the LED control signal input terminal EM of pixel circuit, are shone
The first end of control module 170 is electrically connected with the second voltage signal input part Vdd of pixel circuit, light emitting control module 170
Second end is electrically connected with the first end of drive module 140.
Specifically, the control terminal of light emitting control module 170 can be inputted with the LED control signal of digital drive pixel circuit
EM electrical connection is held, LED control signal input terminal EM is used to input LED control signal to the control terminal of light emitting control module 170.
After light emitting control module 170 is added in digital drive pixel circuit, it is more conducive to the control to light emitting module 150.Example
Property, it, can be in all pixels in the display panel for including the digital drive pixel circuit after light emitting control module 170 is added
After data all are written, believed by the input terminal input control of the light emitting control module 170 into all digital drive pixel circuits
Number, so that all pixels are opened together in display panel, all light emitting modules 150 shine together, so that display effect is better
It is good.Wherein, light emitting control module 170 is chosen as thin film transistor (TFT).
The embodiment of the invention also provides a kind of display device, Figure 12 is a kind of display device provided in an embodiment of the present invention
Structural schematic diagram, with reference to Figure 12, the display device include any embodiment of that present invention provide digital drive pixel circuit, also
Including scan drive circuit 210, data drive circuit 220, driving chip 230, multi-strip scanning line (S1, S2, S3 ...), a plurality of
Data line (D1, D2, D3 ...) and a plurality of first voltage signal wire (VL), data drive circuit 220 integrates and driving chip
In 230；Digital drive pixel circuit includes data voltage input terminal Data, scanning signal input terminal Scan and first voltage signal
Input terminal Vctr；
The port of scan drive circuit 210 is electrically connected with scan line, and port and the data line of data drive circuit 220 are electrically connected
It connects, the scanning signal input terminal Scan of digital drive pixel circuit is electrically connected a scan line, the number of digital drive pixel circuit
It is electrically connected a data line according to voltage input end Data, driving chip 230 passes through first voltage signal wire and digital drive pixel
The first voltage signal input part Vctr of circuit is electrically connected.
It should be noted that only schematically illustrating the digital drive pixel to drive a sub-pixel in Figure 12
The scanning signal input terminal Scan and data voltage input end Data of circuit, to drive the digital drive pixel of other sub-pixels
The scanning signal input terminal Scan and data voltage input end Data of circuit are similar with structure shown by the sub-pixel.
Because of the first voltage signal input part of first voltage signal wire connection driving chip 230 and digital drive pixel circuit
Vctr, driving chip 230 are adjusted to the output voltage of first voltage signal wire to first voltage signal input part Vctr input
Voltage, and then the voltage of 140 control terminal of drive module is adjusted, it may finally achieve the purpose that adjust 150 brightness of light emitting module.
Display device provided in an embodiment of the present invention, the digital drive pixel electricity provided including any embodiment of that present invention
Control module is written by the way that driving voltage is arranged in pixel circuit in road, wherein the control terminal of driving voltage write-in control module
It is electrically connected with data voltage writing module, the first end of driving voltage writing module and the first voltage of digital drive pixel circuit
Signal input part electrical connection, the second end of data voltage writing module are electrically connected with the control terminal of drive module；Driving voltage is write
Enter voltage turn-on or shutdown of the module according to the control terminal of driving voltage writing module, and in conducting that first voltage signal is defeated
The voltage for entering end input is written to the control terminal of drive module, and the current potential of drive module control terminal is allowed to keep stable, into
And the picture brightness that display device is shown is uniform, improves display effect.
2 are continued to refer to figure 1, on the basis of above scheme, optionally, driving chip 230 includes a first voltage letter
Number output end Ctrl；One end of a plurality of first voltage signal wire connects first voltage signal output end Ctrl, other end connection number
The first voltage signal input part Vctr of word drive pixel circuit；A plurality of first voltage signal wire is interconnected to latticed.
Specifically, driving chip 230 includes a voltage signal output end, driving chip 230 is believed by the first voltage
Number output end Ctrl provides voltage signal for the first voltage signal wire of whole display device, and then is picture in whole display device
The control terminal of the drive module of plain circuit provides voltage signal, and a plurality of first voltage signal wire be interconnected to it is latticed,
It can reduce the resistance of first voltage signal wire, provide data voltage by individual data line compared to the prior art, make RC
Delay reduces, so that the light emission luminance for being located at the light emitting module of display picture different location is more nearly, is more conducive to hair
The homogeneity of optical module light emission luminance controls.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of digital drive pixel circuit, which is characterized in that including data voltage writing module, memory module, driving voltage
Writing module, drive module and light emitting module；
The driving voltage writing module includes control terminal, first end and second end, the control of the driving voltage writing module
End is electrically connected with the data voltage writing module, the first end of the driving voltage writing module and the digital drive pixel
The first voltage signal input part of circuit is electrically connected, the control of the second end and the drive module of the driving voltage writing module
End electrical connection processed；
The data voltage writing module is used to that data voltage to be written to the control terminal of the driving voltage writing module；
The memory module is used to store the voltage of the control terminal of the driving voltage writing module；
The driving voltage writing module is used for voltage turn-on or the shutdown of the control terminal according to the driving voltage writing module,
And the voltage of first voltage input terminal input is written to the control terminal of the drive module in conducting；
The drive module is used to drive the light emitting module to shine according to the voltage of the drive module control terminal.
2. digital drive pixel circuit according to claim 1, which is characterized in that the control of the data voltage writing module
End processed is electrically connected with the scanning signal input terminal of the digital drive pixel circuit, the first end of the data voltage writing module
It is electrically connected with the data voltage input terminal of the digital drive pixel circuit, the first end of the data voltage writing module and institute
State the control terminal electrical connection of the driving voltage writing module of digital drive pixel circuit；
The first end of the memory module is electrically connected with the control terminal of the driving voltage writing module of the pixel circuit, described to deposit
The second end of storage module is electrically connected with the first end of the driving voltage writing module of the pixel circuit；
The control terminal of the drive module is electrically connected with the second end of the driving voltage writing module, and the of the drive module
One end is electrically connected with the second voltage signal input part of the pixel circuit, the second end of the drive module and the luminous mould
The first end of block is electrically connected；
The second end of the light emitting module is electrically connected with the tertiary voltage signal input part of the pixel circuit.
3. digital drive pixel circuit according to claim 2, which is characterized in that the data voltage writing module includes
The first transistor, the driving voltage writing module includes second transistor, and the drive module includes third transistor, described
Memory module includes first capacitor, and the light emitting module includes organic luminescent device；
Control terminal of the grid of the first transistor as the data voltage writing module, the first of the first transistor
First end of the pole as the data voltage writing module, the second pole of the first transistor are written as the data voltage
The second end of module；
Control terminal of the grid of the second transistor as the driving voltage writing module, the first of the second transistor
First end of the pole as the driving voltage writing module, the second pole of the second transistor are written as the driving voltage
The second end of module；
Control terminal of the grid of the third transistor as the drive module, the first pole of the third transistor is as institute
State the first end of drive module, second end of the second pole of the third transistor as the drive module；
First end and second end of two pole plates of the first capacitor respectively as the memory module；
First end of first pole of the organic luminescent device as the light emitting module, the second pole of the organic luminescent device
Second end as the light emitting module.
4. digital drive pixel circuit according to claim 3, which is characterized in that further include the shutdown module that accidentally shines, institute
The first end for stating the shutdown module that accidentally shines is electrically connected with the first end of the light emitting module, and the mistake, which shines, turns off the second of module
End is electrically connected with the second end of the light emitting module, and the control terminal of the luminous shutdown module of the mistake is used for input control signal, with
So that the mistake is shone and turns off module conducting when the driving voltage writing module turns off.
5. digital drive pixel circuit according to claim 4, which is characterized in that the mistake shutdown module that shines includes the
Four transistors, the grid of the 4th transistor shines as the mistake turns off the control terminal of module, the 4th transistor
First pole shines as the mistake turns off the first end of module, and the second pole of the 4th transistor shines as the mistake to be turned off
The second end of module.
6. digital drive pixel circuit according to claim 5, which is characterized in that the second transistor and the described 4th
The channel type of transistor is different；The grid of 4th transistor is electrically connected with the grid of the second transistor.
7. digital drive pixel circuit according to claim 5, which is characterized in that the second transistor and the described 4th
The channel type of transistor is identical, and the first control of the grid and the digital drive pixel circuit of the 4th transistor inputs
End electrical connection.
8. digital drive pixel circuit according to claim 2, which is characterized in that it further include light emitting control module, it is described
Light emitting control module includes control terminal, first end and second end, control terminal and the pixel circuit of the light emitting control module
The electrical connection of LED control signal input terminal, the second voltage of the first end of the light emitting control module and the pixel circuit believes
The electrical connection of number input terminal, the second end of the light emitting control module are electrically connected with the first end of the drive module.
9. a kind of display device, which is characterized in that further include scan drive circuit, data drive including digital drive pixel circuit
Dynamic circuit, driving chip, multi-strip scanning line, multiple data lines and a plurality of first voltage signal wire, the data drive circuit
It is integrated in the driving chip；The digital drive pixel circuit include data voltage input terminal, scanning signal input terminal and
First voltage signal input part；
The port of the scan drive circuit is electrically connected with the scan line, the port of the data drive circuit and the data
Line electrical connection, the scanning signal input terminal of the digital drive pixel circuit are electrically connected a scan line, and the number is driven
The data voltage input terminal of dynamic pixel circuit is electrically connected a data line, and the driving chip passes through the first voltage signal wire
It is electrically connected with the first voltage signal input part of the digital drive pixel circuit.
10. display device according to claim 9, which is characterized in that the driving chip includes a first voltage letter
Number output end；One end of a plurality of first voltage signal wire connects the first voltage signal output end, the digital drive
The first voltage signal input part of pixel circuit is electrically connected a first voltage signal wire；The a plurality of first voltage signal
Line is interconnected to latticed.
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